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Radar communication integrated waveform direct optimization method and system

An optimization method and waveform optimization technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of low transmission rate of communication information, unsatisfactory waveform constant model characteristics, etc., achieve low computational complexity, achieve high-speed transmission, good The effect of optimizing the effect

Pending Publication Date: 2022-06-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

However, these methods have shortcomings such as low communication information transmission rate and unsatisfactory waveform constant model characteristics, which are very limited in practical applications.

Method used

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  • Radar communication integrated waveform direct optimization method and system
  • Radar communication integrated waveform direct optimization method and system
  • Radar communication integrated waveform direct optimization method and system

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no. 1 example

[0129] figure 2 This is a schematic flowchart of the direct optimization of the radar communication integrated waveform according to the first embodiment of the present invention; combined with figure 2 A first embodiment of the first aspect of the invention is given.

[0130] 1. First, use the product of the transmit waveform and the steering vector to derive the spatial power distribution characteristics of the transmit waveform; then, combine the desired transmit pattern to establish the MIMO radar transmit waveform optimization model under constant modulus constraints:

[0131] (1) Let the transmit waveform matrix of MIMO radar be: S=[s 1 ,s 2 ,...,s N ], where s n =[s 1 (n),s 2 (n),...,s M (n)] T Represents the transmit waveform of the nth sub-pulse, M is the number of transmit array elements, N is the number of sub-pulses, and the spatial power distribution of the transmit waveform is established as follows:

[0132] P(θ)=||s H A(θ)|| 2

[0133] where s=vec...

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Abstract

The invention provides a radar communication integrated waveform direct optimization method and system. The method is realized based on an MIMO platform, and the MIMO platform is a multi-input multi-output radar transmitting platform. The method comprises the following steps: acquiring a transmitting waveform of a transmitting signal of the MIMO platform, determining a space power distribution characteristic of the transmitting waveform based on the transmitting waveform and a steering vector, and further establishing an optimization model for optimizing the transmitting waveform according to a known expected transmitting directional diagram; obtaining angle steering vectors of a plurality of communication receivers relative to the MIMO platform, constructing communication signal models at the plurality of communication receivers, and generating a radar communication integrated waveform optimization model based on the MIMO platform on the basis of the transmitted waveform optimization model; and obtaining a relaxation model of the radar communication integrated waveform optimization model, and alternately optimizing the transmitted waveform in a cyclic calculation mode until an optimal transmitted waveform is obtained.

Description

technical field [0001] The invention belongs to the fields of radar systems and radar signal processing, and in particular relates to a method and system for direct optimization of radar communication integrated waveforms. Background technique [0002] MIMO radar (Multiple Input Multiple Output Radar) is a new radar system proposed in recent years. Due to its own special advantages, it has attracted extensive attention of many scholars at home and abroad. At present, the research on MIMO radar mainly focuses on the following aspects: MIMO radar array optimization, parameter estimation, target detection and target tracking. Most of these studies are carried out under the assumption that MIMO radars transmit ideal orthogonal waveforms. With the deepening of MIMO radar research, signal processing scholars have found that ideal orthogonal waveforms are not the best choice for MIMO radar in any situation. According to the actual application scenario, reasonable design of the ch...

Claims

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Application Information

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IPC IPC(8): G01S7/282
CPCG01S7/282
Inventor 黄中瑞王海唐波史英春王贵生秦立龙
Owner NAT UNIV OF DEFENSE TECH